| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * (C) 2000 Simon Hausmann <hausmann@kde.org> |
| * Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. |
| * (C) 2006 Graham Dennis (graham.dennis@gmail.com) |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "HTMLAnchorElement.h" |
| |
| #include "DNS.h" |
| #include "EventNames.h" |
| #include "Frame.h" |
| #include "FrameLoaderTypes.h" |
| #include "HTMLImageElement.h" |
| #include "HTMLNames.h" |
| #include "KeyboardEvent.h" |
| #include "MappedAttribute.h" |
| #include "MouseEvent.h" |
| #include "Page.h" |
| #include "RenderImage.h" |
| #include "Settings.h" |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| HTMLAnchorElement::HTMLAnchorElement(const QualifiedName& tagName, Document* document) |
| : HTMLElement(tagName, document, CreateElement) |
| , m_wasShiftKeyDownOnMouseDown(false) |
| , m_linkRelations(0) |
| { |
| } |
| |
| PassRefPtr<HTMLAnchorElement> HTMLAnchorElement::create(Document* document) |
| { |
| return adoptRef(new HTMLAnchorElement(aTag, document)); |
| } |
| |
| PassRefPtr<HTMLAnchorElement> HTMLAnchorElement::create(const QualifiedName& tagName, Document* document) |
| { |
| return adoptRef(new HTMLAnchorElement(tagName, document)); |
| } |
| |
| // This function does not allow leading spaces before the port number. |
| static unsigned parsePortFromStringPosition(const String& value, unsigned portStart, unsigned& portEnd) |
| { |
| portEnd = portStart; |
| while (isASCIIDigit(value[portEnd])) |
| ++portEnd; |
| return value.substring(portStart, portEnd - portStart).toUInt(); |
| } |
| |
| bool HTMLAnchorElement::supportsFocus() const |
| { |
| if (isContentEditable()) |
| return HTMLElement::supportsFocus(); |
| // If not a link we should still be able to focus the element if it has tabIndex. |
| return isLink() || HTMLElement::supportsFocus(); |
| } |
| |
| bool HTMLAnchorElement::isMouseFocusable() const |
| { |
| // Anchor elements should be mouse focusable, https://bugs.webkit.org/show_bug.cgi?id=26856 |
| #if !PLATFORM(GTK) && !PLATFORM(QT) |
| if (isLink()) |
| // Only allow links with tabIndex or contentEditable to be mouse focusable. |
| return HTMLElement::supportsFocus(); |
| #endif |
| |
| // Allow tab index etc to control focus. |
| return HTMLElement::isMouseFocusable(); |
| } |
| |
| bool HTMLAnchorElement::isKeyboardFocusable(KeyboardEvent* event) const |
| { |
| if (!isLink()) |
| return HTMLElement::isKeyboardFocusable(event); |
| |
| if (!isFocusable()) |
| return false; |
| |
| if (!document()->frame()) |
| return false; |
| |
| if (!document()->frame()->eventHandler()->tabsToLinks(event)) |
| return false; |
| |
| if (!renderer() || !renderer()->isBoxModelObject()) |
| return false; |
| |
| // Before calling absoluteRects, check for the common case where the renderer |
| // is non-empty, since this is a faster check and almost always returns true. |
| RenderBoxModelObject* box = toRenderBoxModelObject(renderer()); |
| if (!box->borderBoundingBox().isEmpty()) |
| return true; |
| |
| Vector<IntRect> rects; |
| FloatPoint absPos = renderer()->localToAbsolute(); |
| renderer()->absoluteRects(rects, absPos.x(), absPos.y()); |
| size_t n = rects.size(); |
| for (size_t i = 0; i < n; ++i) |
| if (!rects[i].isEmpty()) |
| return true; |
| |
| return false; |
| } |
| |
| void HTMLAnchorElement::defaultEventHandler(Event* evt) |
| { |
| // React on clicks and on keypresses. |
| // Don't make this KEYUP_EVENT again, it makes khtml follow links it shouldn't, |
| // when pressing Enter in the combo. |
| if (isLink() && (evt->type() == eventNames().clickEvent || (evt->type() == eventNames().keydownEvent && focused()))) { |
| MouseEvent* e = 0; |
| if (evt->type() == eventNames().clickEvent && evt->isMouseEvent()) |
| e = static_cast<MouseEvent*>(evt); |
| |
| KeyboardEvent* k = 0; |
| if (evt->type() == eventNames().keydownEvent && evt->isKeyboardEvent()) |
| k = static_cast<KeyboardEvent*>(evt); |
| |
| if (e && e->button() == RightButton) { |
| HTMLElement::defaultEventHandler(evt); |
| return; |
| } |
| |
| // If the link is editable, then we need to check the settings to see whether or not to follow the link |
| if (isContentEditable()) { |
| EditableLinkBehavior editableLinkBehavior = EditableLinkDefaultBehavior; |
| if (Settings* settings = document()->settings()) |
| editableLinkBehavior = settings->editableLinkBehavior(); |
| |
| switch (editableLinkBehavior) { |
| // Always follow the link (Safari 2.0 behavior) |
| default: |
| case EditableLinkDefaultBehavior: |
| case EditableLinkAlwaysLive: |
| break; |
| |
| case EditableLinkNeverLive: |
| HTMLElement::defaultEventHandler(evt); |
| return; |
| |
| // If the selection prior to clicking on this link resided in the same editable block as this link, |
| // and the shift key isn't pressed, we don't want to follow the link |
| case EditableLinkLiveWhenNotFocused: |
| if (e && !e->shiftKey() && m_rootEditableElementForSelectionOnMouseDown == rootEditableElement()) { |
| HTMLElement::defaultEventHandler(evt); |
| return; |
| } |
| break; |
| |
| // Only follow the link if the shift key is down (WinIE/Firefox behavior) |
| case EditableLinkOnlyLiveWithShiftKey: |
| if (e && !e->shiftKey()) { |
| HTMLElement::defaultEventHandler(evt); |
| return; |
| } |
| break; |
| } |
| } |
| |
| if (k) { |
| if (k->keyIdentifier() != "Enter") { |
| HTMLElement::defaultEventHandler(evt); |
| return; |
| } |
| evt->setDefaultHandled(); |
| dispatchSimulatedClick(evt); |
| return; |
| } |
| |
| String url = deprecatedParseURL(getAttribute(hrefAttr)); |
| |
| ASSERT(evt->target()); |
| ASSERT(evt->target()->toNode()); |
| if (evt->target()->toNode()->hasTagName(imgTag)) { |
| HTMLImageElement* img = static_cast<HTMLImageElement*>(evt->target()->toNode()); |
| if (img && img->isServerMap()) { |
| RenderImage* r = toRenderImage(img->renderer()); |
| if (r && e) { |
| // FIXME: broken with transforms |
| FloatPoint absPos = r->localToAbsolute(); |
| int x = e->pageX() - absPos.x(); |
| int y = e->pageY() - absPos.y(); |
| url += "?"; |
| url += String::number(x); |
| url += ","; |
| url += String::number(y); |
| } else { |
| evt->setDefaultHandled(); |
| HTMLElement::defaultEventHandler(evt); |
| return; |
| } |
| } |
| } |
| |
| if (!evt->defaultPrevented() && document()->frame()) |
| document()->frame()->loader()->urlSelected(document()->completeURL(url), getAttribute(targetAttr), evt, false, false, true, hasRel(RelationNoReferrer) ? NoReferrer : SendReferrer); |
| |
| evt->setDefaultHandled(); |
| } else if (isLink() && isContentEditable()) { |
| // This keeps track of the editable block that the selection was in (if it was in one) just before the link was clicked |
| // for the LiveWhenNotFocused editable link behavior |
| if (evt->type() == eventNames().mousedownEvent && evt->isMouseEvent() && static_cast<MouseEvent*>(evt)->button() != RightButton && document()->frame() && document()->frame()->selection()) { |
| MouseEvent* e = static_cast<MouseEvent*>(evt); |
| |
| m_rootEditableElementForSelectionOnMouseDown = document()->frame()->selection()->rootEditableElement(); |
| m_wasShiftKeyDownOnMouseDown = e && e->shiftKey(); |
| } else if (evt->type() == eventNames().mouseoverEvent) { |
| // These are cleared on mouseover and not mouseout because their values are needed for drag events, but these happen |
| // after mouse out events. |
| m_rootEditableElementForSelectionOnMouseDown = 0; |
| m_wasShiftKeyDownOnMouseDown = false; |
| } |
| } |
| |
| HTMLElement::defaultEventHandler(evt); |
| } |
| |
| void HTMLAnchorElement::setActive(bool down, bool pause) |
| { |
| if (isContentEditable()) { |
| EditableLinkBehavior editableLinkBehavior = EditableLinkDefaultBehavior; |
| if (Settings* settings = document()->settings()) |
| editableLinkBehavior = settings->editableLinkBehavior(); |
| |
| switch (editableLinkBehavior) { |
| default: |
| case EditableLinkDefaultBehavior: |
| case EditableLinkAlwaysLive: |
| break; |
| |
| case EditableLinkNeverLive: |
| return; |
| |
| // Don't set the link to be active if the current selection is in the same editable block as |
| // this link |
| case EditableLinkLiveWhenNotFocused: |
| if (down && document()->frame() && document()->frame()->selection() && |
| document()->frame()->selection()->rootEditableElement() == rootEditableElement()) |
| return; |
| break; |
| |
| case EditableLinkOnlyLiveWithShiftKey: |
| return; |
| } |
| |
| } |
| |
| ContainerNode::setActive(down, pause); |
| } |
| |
| void HTMLAnchorElement::parseMappedAttribute(MappedAttribute *attr) |
| { |
| if (attr->name() == hrefAttr) { |
| bool wasLink = isLink(); |
| setIsLink(!attr->isNull()); |
| if (wasLink != isLink()) |
| setNeedsStyleRecalc(); |
| if (isLink()) { |
| String parsedURL = deprecatedParseURL(attr->value()); |
| if (document()->isDNSPrefetchEnabled()) { |
| if (protocolIs(parsedURL, "http") || protocolIs(parsedURL, "https") || parsedURL.startsWith("//")) |
| prefetchDNS(document()->completeURL(parsedURL).host()); |
| } |
| if (document()->page() && !document()->page()->javaScriptURLsAreAllowed() && protocolIsJavaScript(parsedURL)) { |
| setIsLink(false); |
| attr->setValue(nullAtom); |
| } |
| } |
| } else if (attr->name() == nameAttr || |
| attr->name() == titleAttr) { |
| // Do nothing. |
| } else if (attr->name() == relAttr) |
| setRel(attr->value()); |
| else |
| HTMLElement::parseMappedAttribute(attr); |
| } |
| |
| void HTMLAnchorElement::accessKeyAction(bool sendToAnyElement) |
| { |
| // send the mouse button events if the caller specified sendToAnyElement |
| dispatchSimulatedClick(0, sendToAnyElement); |
| } |
| |
| bool HTMLAnchorElement::isURLAttribute(Attribute *attr) const |
| { |
| return attr->name() == hrefAttr; |
| } |
| |
| bool HTMLAnchorElement::canStartSelection() const |
| { |
| // FIXME: We probably want this same behavior in SVGAElement too |
| if (!isLink()) |
| return HTMLElement::canStartSelection(); |
| return isContentEditable(); |
| } |
| |
| bool HTMLAnchorElement::draggable() const |
| { |
| // Should be draggable if we have an href attribute. |
| const AtomicString& value = getAttribute(draggableAttr); |
| if (equalIgnoringCase(value, "true")) |
| return true; |
| if (equalIgnoringCase(value, "false")) |
| return false; |
| return hasAttribute(hrefAttr); |
| } |
| |
| KURL HTMLAnchorElement::href() const |
| { |
| return document()->completeURL(deprecatedParseURL(getAttribute(hrefAttr))); |
| } |
| |
| void HTMLAnchorElement::setHref(const AtomicString& value) |
| { |
| setAttribute(hrefAttr, value); |
| } |
| |
| bool HTMLAnchorElement::hasRel(uint32_t relation) const |
| { |
| return m_linkRelations & relation; |
| } |
| |
| void HTMLAnchorElement::setRel(const String& value) |
| { |
| m_linkRelations = 0; |
| SpaceSplitString newLinkRelations(value, true); |
| // FIXME: Add link relations as they are implemented |
| if (newLinkRelations.contains("noreferrer")) |
| m_linkRelations |= RelationNoReferrer; |
| } |
| |
| const AtomicString& HTMLAnchorElement::name() const |
| { |
| return getAttribute(nameAttr); |
| } |
| |
| short HTMLAnchorElement::tabIndex() const |
| { |
| // Skip the supportsFocus check in HTMLElement. |
| return Element::tabIndex(); |
| } |
| |
| String HTMLAnchorElement::target() const |
| { |
| return getAttribute(targetAttr); |
| } |
| |
| String HTMLAnchorElement::hash() const |
| { |
| String fragmentIdentifier = href().fragmentIdentifier(); |
| return fragmentIdentifier.isEmpty() ? "" : "#" + fragmentIdentifier; |
| } |
| |
| void HTMLAnchorElement::setHash(const String& value) |
| { |
| KURL url = href(); |
| if (value[0] == '#') |
| url.setFragmentIdentifier(value.substring(1)); |
| else |
| url.setFragmentIdentifier(value); |
| setHref(url.string()); |
| } |
| |
| String HTMLAnchorElement::host() const |
| { |
| const KURL& url = href(); |
| if (url.hostEnd() == url.pathStart()) |
| return url.host(); |
| if (isDefaultPortForProtocol(url.port(), url.protocol())) |
| return url.host(); |
| return url.host() + ":" + String::number(url.port()); |
| } |
| |
| void HTMLAnchorElement::setHost(const String& value) |
| { |
| if (value.isEmpty()) |
| return; |
| KURL url = href(); |
| if (!url.canSetHostOrPort()) |
| return; |
| |
| int separator = value.find(':'); |
| if (!separator) |
| return; |
| |
| if (separator == -1) |
| url.setHostAndPort(value); |
| else { |
| unsigned portEnd; |
| unsigned port = parsePortFromStringPosition(value, separator + 1, portEnd); |
| if (!port) { |
| // http://dev.w3.org/html5/spec/infrastructure.html#url-decomposition-idl-attributes |
| // specifically goes against RFC 3986 (p3.2) and |
| // requires setting the port to "0" if it is set to empty string. |
| url.setHostAndPort(value.substring(0, separator + 1) + "0"); |
| } else { |
| if (isDefaultPortForProtocol(port, url.protocol())) |
| url.setHostAndPort(value.substring(0, separator)); |
| else |
| url.setHostAndPort(value.substring(0, portEnd)); |
| } |
| } |
| setHref(url.string()); |
| } |
| |
| String HTMLAnchorElement::hostname() const |
| { |
| return href().host(); |
| } |
| |
| void HTMLAnchorElement::setHostname(const String& value) |
| { |
| // Before setting new value: |
| // Remove all leading U+002F SOLIDUS ("/") characters. |
| unsigned i = 0; |
| unsigned hostLength = value.length(); |
| while (value[i] == '/') |
| i++; |
| |
| if (i == hostLength) |
| return; |
| |
| KURL url = href(); |
| if (!url.canSetHostOrPort()) |
| return; |
| |
| url.setHost(value.substring(i)); |
| setHref(url.string()); |
| } |
| |
| String HTMLAnchorElement::pathname() const |
| { |
| return href().path(); |
| } |
| |
| void HTMLAnchorElement::setPathname(const String& value) |
| { |
| KURL url = href(); |
| if (!url.canSetPathname()) |
| return; |
| |
| if (value[0] == '/') |
| url.setPath(value); |
| else |
| url.setPath("/" + value); |
| |
| setHref(url.string()); |
| } |
| |
| String HTMLAnchorElement::port() const |
| { |
| return String::number(href().port()); |
| } |
| |
| void HTMLAnchorElement::setPort(const String& value) |
| { |
| KURL url = href(); |
| if (!url.canSetHostOrPort()) |
| return; |
| |
| // http://dev.w3.org/html5/spec/infrastructure.html#url-decomposition-idl-attributes |
| // specifically goes against RFC 3986 (p3.2) and |
| // requires setting the port to "0" if it is set to empty string. |
| unsigned port = value.toUInt(); |
| if (isDefaultPortForProtocol(port, url.protocol())) |
| url.removePort(); |
| else |
| url.setPort(port); |
| |
| setHref(url.string()); |
| } |
| |
| String HTMLAnchorElement::protocol() const |
| { |
| return href().protocol() + ":"; |
| } |
| |
| void HTMLAnchorElement::setProtocol(const String& value) |
| { |
| int separator = value.find(':'); |
| |
| if (!separator) |
| return; |
| if (value.isEmpty()) |
| return; |
| |
| KURL url = href(); |
| // Following Firefox 3.5.2 which removes anything after the first ":" |
| String newProtocol = value.substring(0, separator); |
| if (!isValidProtocol(newProtocol)) |
| return; |
| url.setProtocol(newProtocol); |
| |
| setHref(url.string()); |
| } |
| |
| String HTMLAnchorElement::search() const |
| { |
| String query = href().query(); |
| return query.isEmpty() ? "" : "?" + query; |
| } |
| |
| void HTMLAnchorElement::setSearch(const String& value) |
| { |
| KURL url = href(); |
| String newSearch = (value[0] == '?') ? value.substring(1) : value; |
| // Make sure that '#' in the query does not leak to the hash. |
| url.setQuery(newSearch.replace('#', "%23")); |
| |
| setHref(url.string()); |
| } |
| |
| String HTMLAnchorElement::text() const |
| { |
| return innerText(); |
| } |
| |
| String HTMLAnchorElement::toString() const |
| { |
| return href().string(); |
| } |
| |
| bool HTMLAnchorElement::isLiveLink() const |
| { |
| if (!isLink()) |
| return false; |
| if (!isContentEditable()) |
| return true; |
| |
| EditableLinkBehavior editableLinkBehavior = EditableLinkDefaultBehavior; |
| if (Settings* settings = document()->settings()) |
| editableLinkBehavior = settings->editableLinkBehavior(); |
| |
| switch (editableLinkBehavior) { |
| default: |
| case EditableLinkDefaultBehavior: |
| case EditableLinkAlwaysLive: |
| return true; |
| |
| case EditableLinkNeverLive: |
| return false; |
| |
| // Don't set the link to be live if the current selection is in the same editable block as |
| // this link or if the shift key is down |
| case EditableLinkLiveWhenNotFocused: |
| return m_wasShiftKeyDownOnMouseDown || m_rootEditableElementForSelectionOnMouseDown != rootEditableElement(); |
| |
| case EditableLinkOnlyLiveWithShiftKey: |
| return m_wasShiftKeyDownOnMouseDown; |
| } |
| } |
| |
| } |
